<!--
 function categoryChange(selectObj) { 
 var idx = selectObj.selectedIndex; 
 var which = selectObj.options[idx].value; 
 cList = categoryLists[which]; 
 var cSelect = document.getElementById("podcat"); 
 var len=cSelect.options.length; 
 while (cSelect.options.length > 0) { 
 cSelect.remove(0); 
 } 
 var newOption; 
 for (var i=0; i<cList.length; i++) { 
 newOption = document.createElement("option"); 
 tmpid = cList[i].split('~')
 newOption.value = tmpid[0]; 
 newOption.text=tmpid[1]; 
 try { 
 cSelect.add(newOption); 
 } 
 catch (e) { 
 cSelect.appendChild(newOption); 
 } 
 } 
 } 
//-->